Who remembers The Sega Channel? That shit use to be badass if you had one.
http://en.wikipedia.org/wiki/Sega_Channel
I also had one of these, Sega Nomad, it was a handheld that played regular sega games, use to EAT the 8 double a batteries, in about an hour and a half of game play.
http://en.wikipedia.org/wiki/Sega_Nomad